Object-oriented finite element analysis

Forde, Bruce W.R.; Foschi, Ricardo O.; Stiemer, S. F.

doi:10.1016/0045-7949(90)90261-y

Cited by 146 publications

(43 citation statements)

References 4 publications

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“…Most current programs have graphical capabilities to help in this step and the possibility of user interaction. In most cases this post-processing phase can be automated by means of a program or subprogram (Babuska and Miller, 1984a, 1984b, 1984cForde et al, 1990).…”

Section: Finite Element Methodsmentioning

confidence: 99%

Present and future of the numerical methods in buildings and infrastructures areas of biosystems engineering

Ayuga

2015

J Agricult Engineer

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Biosystem engineering is a discipline resulting from the evolution of the traditional agricultural engineering to include new engineering challenges related with biological systems, from the cell to the environment. Modern buildings and infrastructures are needed to satisfy crop and animal production demands. In this paper a review on the status of numerical methods applied to solve engineering problems in the field of buildings and infrastructures in biosystem engineering is presented. The history and basic background of the finite element method is presented. This is the first numerical method implemented and also the more developed one. The history and background of other two more recent methods, with practical applications, the computer fluids dynamics and the discrete element method are also presented. Besides, a review on the scientific and professional applications on the field of buildings and infrastructures for biosystem engineering needs is presented. Today we can simulate engineering problems with solids, engineering problems with fluids and engineering problems with particles and get to practical solutions faster and cheaper than in the past. The paper encourages young engineers and researchers to make progress these tools and their engineering applications. The capacities of all numerical methods in their present development status go beyond the present practical applications. There is a broad field to work on it. IntroductionThe present paper is a review of the numerical methods at present and their applications in solving engineering problems. The field is too wide to be considered in a single article. This is why the paper focuses on presenting the fundamentals of the most significant numerical methods that can be applied for buildings and infrastructures areas of biosystems engineering. The three next numerical methods will be considered: i) finite element method (FEM); ii) computer fluid dynamics (CFD); iii) discrete element method (DEM).In the paper the main features of these methods will be presented along with showing some examples in areas of biosystems engineering. Modern engineering can be considered to begin with the industrial revolution in the late eighteenth and early nineteenth century. From the very beginning, it has used the most powerful mathematical tools of the time in order to solve problems arising in practice. It was considered a fact that it was essential acquiring solid mathematical foundations for being a good engineer. The programs of studies from all Universities of the time prove it so. Even great figures on mathematics of the nineteenth and twentieth centuries were formally engineers. This symbiosis has produced good results for society. In the second half of XX Century, the fast development of computer science produced a great advance in numerical methods applied to physics and engineering.Based on this premise, the predictable future is that calculation and structural analysis in all fields of engineering will be based on modern numerical methods. This power...

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Section: Finite Element Methodsmentioning

confidence: 99%

Present and future of the numerical methods in buildings and infrastructures areas of biosystems engineering

Ayuga

2015

J Agricult Engineer

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“…the Node, Element, Constraint, and Load objects [6]. For other object-oriented finite element programs, class that is used for this purpose may use different names, such as NAP [26], LocalDB [27], Partition [28], FE_Model [29], Model [30], and Domain [31]. The functionality of the Domain class can be divided into two categories.…”

Section: Object Serializationmentioning

confidence: 99%

An engineering data access system for a finite element program

Peng

Liu

Law

2003

Advances in Engineering Software

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This paper describes a prototype implementation of an engineering data access system for a finite element analysis program. The system incorporates a commercial off-the-shelf (COTS) database as the backend to store selected analysis results; and the Internet is utilized as the communication channel to access the analysis results. The objective of using an engineering database is to provide the users the needed engineering information from readily accessible sources in a ready-to-use format for further manipulation. Three key issues regarding the engineering data access system are discussed, including data modeling, data representation, and data retrieval. The engineering data access system gives great flexibility and extendibility to the data management in finite element programs and can provide additional features to enhance the applicability of finite element analysis software.

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“…The first successful attempts to organizing a finite element program using the object-oriented paradigm dates back to [35][36][37] with the SMALLTALK programming language. Theresince, the ease of maintenance, reliability, and reusability of the OO generated software have given birth to multiple object-oriented finite element packages.…”

Section: Introductionmentioning

confidence: 99%

Enriched finite elements and level sets for damage tolerance assessment of complex structures

Bordas

Moran

2006

Engineering Fracture Mechanics

150

116

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The extended finite element method (X-FEM) has recently emerged as an alternative to meshing/remeshing crack surfaces in computational fracture mechanics thanks to the concept of discontinuous and asymptotic partition of unity enrichment (PUM) of the standard finite element approximation spaces. Level set methods have been recently coupled with X-FEM to help track the crack geometry as it grows. However, little attention has been devoted to employing the X-FEM in real-world cases. This paper describes how X-FEM coupled with level set methods can be used to solve complex threedimensional industrial fracture mechanics problems through combination of an object-oriented (C++) research code and a commercial solid modeling/finite element package (EDS-PLM/I-DEAS Ò ). The paper briefly describes how object-oriented programming shows its advantages to efficiently implement the proposed methodology. Due to enrichment, the latter method allows for multiple crack growth scenarios to be analyzed with a minimal amount of remeshing. Additionally, the whole component contributes to the stiffness during the whole crack growth simulation. The use of level set methods permits the seamless merging of cracks with boundaries. To show the flexibility of the method, the latter is applied to damage tolerance analysis of a complex aircraft component.

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Object-oriented finite element analysis

Cited by 146 publications

References 4 publications

Present and future of the numerical methods in buildings and infrastructures areas of biosystems engineering

Present and future of the numerical methods in buildings and infrastructures areas of biosystems engineering

An engineering data access system for a finite element program

Enriched finite elements and level sets for damage tolerance assessment of complex structures

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